メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.444496010635 43.8087897391424, 142.445323114034 43.8092965663921, 142.444602280679 43.8098843693967, 142.444180184721 43.8096267501259, 142.443841281329 43.8094199165382, 142.443783729998 43.8093848015203, 142.443505334442 43.8092148879563, 142.442471737207 43.8085840359575, 142.442310493604 43.8084834158005, 142.442180730416 43.8084083033756, 142.44196773359 43.808273489664, 142.443217599493 43.8072053676465, 142.443305124046 43.8071305566682, 142.443810041151 43.8074469686608, 142.443349485732 43.80783714468, 142.443178695975 43.8079824695315, 142.444496010635 43.8087897391424)) ^^http://www.opengis.net/ont/geosparql#wktLiteral